I've been seeing a lot of vitriol towards BH not posting about Taejin's OSTs on the official twitter account. I have a simple answer: BH doesn't profit from those OST releases.
Take a look at this screenshot taken from week 12 of Gaon Digital chart last year.
This company (called Blending) took control of both production (1st row) and circulation (2nd row), so basically that's distribution rights. They put out the song and get the profit from any money it made.
Jin's Yours is distributed by a company with a lot of influence: Dreamus.
Look at the description box and it tells you that the copyright falls to them
Now BTS's music is released by BH Music/HYBE. The OSTs are completely separate from the company and group image that BTS have crafted.
Now, about the covers, idk why BH doesn't post about them. I'm not a business major or anything like that, but some basic knowledge about the charts would be much appreciated instead of mass complaining.